Who is behind open10k.com
This is a research project, not a product. The data is free because the filings are public and the work of cleaning them up should not have to be repeated by everyone who needs it. Made with Malloy — a new data language.
Tim Olsen
Associate Professor of Management Information Systems
School of Business Administration, Gonzaga University
Tim teaches analytics, and does research on XBRL, Large Language Models, semantic modeling, and implications of digital work platforms.
In 2021 he was a US Fulbright Scholar in Malaysia.
Where the data comes from
Every figure on this site originates in a company’s own XBRL exhibit filed with the U.S. Securities and Exchange Commission, by way of the SEC’s Financial Statement and Notes data sets. Nothing is estimated, and nothing is rekeyed by hand.
The work is in the assembly: taking the row structure from a company’s most recent 10-K, filling it back through every prior filing, following the concept when a filer retags a line, resolving restatements to the latest reported figure, and keeping the segment detail that standardised databases usually flatten. Each workbook carries a Data (long) tab with the XBRL tag and accession number behind every value, so any number can be checked against EDGAR.
Found something that looks wrong? That is the most useful email you can send: olsent@gonzaga.edu.